But Amazon has recently come under fire from another source, and it’s one that’s less expected than some of its frequent critics. The Guardian reports that the retail and tech giant has drawn the ire of the Auschwitz Memorial.

The criticism was twofold: first, the Auschwitz Memorial criticized the Amazon Prime series Hunters for historical inaccuracies — specifically, for depicting a fictional game of chess played with humans as the pieces within the walls of a concentration camp. “Inventing a fake game of human chess for @huntersonprime is not only dangerous foolishness & caricature,” the Memorial wrote on Twitter. “It also welcomes future deniers. We honor the victims by preserving factual accuracy.”

The Memorial’s second critique addressed the availability of books by Nazis, including Julius Streicher, on Amazon.

When you decide to make a profit on selling vicious antisemitic Nazi propaganda published without any critical comment or context, you need to remember that those words led not only to the #Holocaust but also many other hate crimes motivated by #antisemitism. https://t.co/qX4Gsz5h6E

Earlier this month, David Streitfeld at The New York Times reported that Amazon was beginning the process of removing Nazi-friendly books from its (virtual) shelves. However, the article notes “how hard it can be to tell exactly what Amazon’s rules are.” Certain books written by Nazis and other white supremacists are no longer available, while others remain on the shelves.

That inconsistency might be why, late last week, Amazon found themselves facing renewed calls to remove certain titles — including an anti-Semitic children’s book by Streicher, who was executed in 1946 after being found guilty of crimes against humanity.

Amazon is known for its lack of transparency; in this instance, when dealing with such a sensitive subject, that policy might be working against the company.